While far from conclusive, these results are certainly
interesting. And they don't feel inconceivable. (Do you know
anyone who has chosen a Surface over an iPad?)

As John
Gruber of Daring Fireball points out, the analysis skews
toward Twitter users, who are likely on the geeky end
of the consumer spectrum (and, therefore, more likely to buy
higher end iPads than, say, lower end Kindle Fires). But this skew shouldn't hammer
the Google's Nexus 7 or the Surface, both of which considered to
be high-end tablets.